Fbank h



(No Model.)

I. H. PULSIFER, Jr.

SECTIONAL BOILBR.

No. 368,235. Patented Aug. 16.*, 1887.

W @aga/ fa/@W I 67702/08070 ATTORNEY Pirins. Pham-mmmpnar, wa-hangmn, n.c.

UNITED STATES PATENT GEEICE.

FRANK n. rULsiEER, JR., or AUBURN, NEW YORK.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 368,235, dated August16, 1887.

(No model.)

To all whom it may concern:

Be it known that I, FRANK H. PULsIEER, J r., a citizen of the UnitedStates, residing at Auburn, in the county of Cayuga, State of New York,have invented cert-ain new and useful Improvements in SectionalBoilers,of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relates to improvements in castiron sectional boilersforheating purposes; and the objects of my improvements are, rst, toprovide a simple and inexpensive boiler formed of sections constructedwith an inner and an outer segment of a ring as water-chambers, the endsof said segments or chambers being connected together and forming acontinuous passage in each section for the passage and circulation ofwater; second, to provide from the inner walls of said segmentalsections a magazine for the reception of coal; third, to provide withinthe outer segmental chamber inclined partitions, in combination withopenings directly above and under said partitions, to cause the water tocirculate entirely through the inner and outer chambers of each sectionbefore reaching the section above. I accomplish these objects by theconstruction illustrated in the accompanying drawings, in which-- Figure1 represents a vertical section on line x2 :r2 of Fig. 4. ofa cast-ironsectional boiler constructed in accordance with my invention. Fig. 2represents a vertical section following the curved dotted line .cfm ofFig. 3 to show the waterpassages and inclined partitions leading thewater and its circulation all around each section and from one sectionof the boiler to the other. Fig. 3 is a top view of the second section,E, of the boiler. Fig. 4- is a top view of the uppermost section. Fig. 5is a horizontal sectional View of the boiler-section E of Fig. 1. Fig. 6is an enlarged View of the openingsfused for circulation. Fig. 7 is atop view of the lowest or fire-pot section of the boiler.

The boiler may have a larger or a smaller number 0f horizontal sectionsthan shown in the drawings; but I prefer to have it constructed of thefollowing sections: A bottom section, A, forming the fire-pot of thefurnace. This section rests upon a east-iron base, B,

used as the aslrpit. The latter carries the grate B', and is providedwith a door, B2, for the removal of the ashes passing through the grate.Upon the bottom section, A, the sections C D E are placed one above theother. These are alike in form, and each consists, as shown in Figs. 3and 5, of an inner hollow segmental ring, d, and an outer segmentalring, D2. These segmental hollow rings are connected at their ends byhollow horizontal eX- tensionsg, forming continuous passages of uniformsize between said segments, through which the water circulates When theboiler is in operation.

To retain the segments C D E in proper position upon each other, theyhave projecting from the upper surface of the inner segmental ring aflange that enters a corresponding groove, c, in the bottom of thesuperposed section. The inner segmental rings, d, rest upon each otherand form a central magazine for the reception of fuel, the ends of thesegmental sections being united by a small plate 0r Web, e', on theinner periphery, to complete the circular form of the magazineandprevent the products of combustion from entering it on their upwardpassage. rlhere is also a plate or web, e, that connects the ends of theouter segmental section and forms a partition at that point between theupward and the downward draft. The outer segmental rings, C2 D E2, areprovided with openings f in their top and bottom for the passage ot'water from one section to the one next above and to direct the water sothat it will pass along the whole length of the segmental rings of eachsection before it enters the one next above. Each section has aninclined partition, h, directly opposite the opcningsf, and saidpartition is connected at its lower end to one `end of the loweropeningf and its upper end to the opposite end of the upper openingsf ofsaid section. The surfaces of the sections surrounding thewater-passagesf are cupped on their upper surface to receive acorresponding projection on the lower surface of the adjacent section,the projection being set into the cupped recess of the section nextbeneath, as shown on alarger scalein Fig. 6. Thesejoints are renderedsteam and water tight by suitable packing, and each section is united tothe IOO adjoining section by means of short bolts M, Fig. `6, the boltsbeing at intermediate dis- -tances apart on two adjoining sections.

' through the ilne I directly into the uptakeflue K o r (according tothe position of the damper i) into the smoke-descending passage Y,extending around the whole circumference of the sections C D E, andthence down into the passage Tin the lire-pot section A, and thence inthe smoke-passage L at the rear of the furnace, from which they passinto the uptake K.

The sections C D E are so arranged relatively to each other that theends of the segmental rings or extensions g do not coincide verticallyabove each other, but are at different points, as shown at g by dottedlines in Fig. 3. This causes the products of combustion to take a zigzagcourse and have the caloric well absorbed by the surfaces of thesections. The upper end of the magazine is covered with a hood, J, towhich the door h is hinged, and can be opened for the admission-of coal.There is an air-space between the two jackets N and O. There are alsosliding Vdoors R in said jackets and doors P in that portion ot thejacket upon the same level with the lire-pot to clear ot' the dust thatmay collect. There is also an opening, Q, in the walls of the firepot,'through which the iire may be kindled and observed. Although I haveshown the openingsf and their inclined partition h in' the outersegmental rings, it is evident that they may be located in the innersegmental rings, and substantially the same circulation of the waterwill thereby be obtained in the sections and from one section to theother.

Having now fully described my invention, I claim- 1. In a cast-ironboiler, the combination of a supporting-section and a top section withintermediate horizontal sections, each consisting of concentric hollowsegmental rings united by hollow extensions formed integral therewith,substantially as and for the purpose described.

2. The combination of a supporting-section and a top section withintermediate horizontal sections, each consisting of concentric hollowsegmental rings united by hollow extensions formed integral therewith,theinner segmental rings located one above the other and retained byinterlocking projections upon each one and forming a central magazine,substantially as and for the purpose described.

3. The combination of a hollow supportingsection, a top section providedwith a central opening forming the upper end of a magazine, and a hoodover the same with intermediate horizontal sections, each consisting ofconcentric hollow segmentalringsunited by hollow extensions formedintegral therewith, the inner segmental rings located one above theother and forming a central magazine directly under the central openingin the top section,

substantially as and for the purpose described.

4:. In a cast-iron boiler, the combination of a supporting-section and atop section with intermediate horizontal sections, each consisting ofconcentric hollow segmental rrings united by hollow extensions, one ofsaid segmental rings being provided with an opening, f, in the top andbottom thereof and an inclined partition, h', between said openings,substantially as and forthe purpose described.

In testimony whereof I aftix my signature in presence of two witnesses.

FRANK H. PULSIFER, JR.

Witnesses:

J EREMIAH HARRINGTON, JAMES HAMILTON.

